Kromschroder PFU 780 / PFU 760 Burner Control Unit
Kromschroder PFU 780 / PFU 760 Burner Control Unit code 33: Blinking 33
Faulty parameter settings were detected in the control unit, causing the burner to lock out.
- Code
- 33
- Name
- Blinking 33
- Controller
- Kromschroder PFU 780 / PFU 760 Burner Control Unit
- Type
- Setup or parameter fault
- What it does
- Fault: the equipment trips and stops
- Risk
- YELLOW Booth plays by its own rules
- Reset
- Needs a manual reset
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated July 23, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 1 common cause listed for this code
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Kromschroder PFU 780 / PFU 760 Burner Control Unit code 33 mean?
Faulty parameter settings were detected in the control unit, causing the burner to lock out.
Is Kromschroder PFU 780 / PFU 760 Burner Control Unit code 33 dangerous?
It is graded yellow: not hard, but a booth does it differently than the gear most techs know, so follow the checks in order.
How do I fix Kromschroder PFU 780 / PFU 760 Burner Control Unit code 33?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Kromschroder PFU 780 / PFU 760 Burner Control Unit codes
7 · Blinking 78 · Blinking 810 · Blinking 1032 · Blinking 3235 · Blinking 3536 · Blinking 3651 · Blinking 5152 · Blinking 5253 · Blinking 53
All 15 Kromschroder PFU 780 / PFU 760 Burner Control Unit codes · Every fault code